Bioreactor vessel



FIG. 1 is a front elevation view of a bioreactor vessel according to the design;

FIG. 2 is a left elevation view of the bioreactor vessel;

FIG. 3 is a rear elevation view of the bioreactor vessel;

FIG. 4 is a right elevation of the bioreactor vessel;

FIG. 5 is a bottom view of the bioreactor vessel;

FIG. 6 is a top plan view of the bioreactor vessel; and,

FIG. 7 is a perspective view of the bioreactor vessel.

Portions of the bioreactor vessel shown in broken line form no part of the claimed design. 

The ornamental design for a bioreactor vessel, as shown and described. 